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Lab Test Dictionary

Arylsulfatase A, 24 Hour, Urine (ARSU)


Colorimetric, Enzyme Assay


ARSA Deficiency; Metachormatic Leukodystrophy; MLD

Specimen Type

Urine, Timed Collection

Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

9-16 Days

Collection Information

Specimen Required

2.5-6 mL 24 Hour Urine

Container Type

Sterile Container

Collection Instructions

No preservative. Refrigerate specimen during collection

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp=Unacceptable;Refrigerated=14 Days; Frozen=Unacceptable

Test Volume Required

6 mL 24 Hour Urine

Minimum Test Volume

2.5 mL 24 Hour Urine

Processing Instructions

Order in Mayolink and send with Mayo courier Monday-Friday

CPT Codes